Today I am going to teach you the basic steps to prepare your dahlia tubers for winter storage, so they are ready to plant next spring! Dahlias are one of my favorite flowers to grow. There is something about their magnificent sizes and colors that just make me happy every time I see them. Dahlias are easy to grow, come in a variety of colors, and if cared for correctly, you can dig, divide and replant the dahlia tubers year after year for more and more blooms.